Is it really just for revenge?

I think it's more of juyeon just want to break jiwook to have him, if you don't mind spoiler



When jiwook first had his head injury that resulted in him having amnesia, juyeon went to visit him at the hospital and when he learned that jiwook had memory loss he tried to start new and didn't want to mention their past together but jiwook being the jerk he was said mean things to juyeon, saying he look like he into men and that if he can't even remember who he was that the doctor said it mean he it was not important memory
Also jiwook kinda threaten juyeon with rape in that hospital visit saying he look pretty and needed man embrace or something, jiwook actually does that during their first meeting in college too when he looked at juyeon face and thought he looked pretty, jiwook definitely like juyeon face, and juyeon was intimidated by jiwook threats so we see in that last chapter juyeon even let his guard down when jiwook became broken and obedient but he also still suspecious of hin